Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142557
Title: Analysis of jacking forces during pipe jacking in granular materials using particle methods
Authors: Ji, Xinbo
Ni, Pengpeng
Barla, Marco
Keywords: Engineering::Civil engineering
Issue Date: 2019
Source: Ji, X., Ni, P., & Barla, M. (2019). Analysis of jacking forces during pipe jacking in granular materials using particle methods. Underground Space, 4(4), 277-288. doi:10.1016/j.undsp.2019.03.002
Journal: Underground Space
Abstract: Trenchless technology is often used in congested urban areas or river crossings to install underground pipelines to minimize disturbance to surface traffic or other activities. Pipe jacking is a typical technique applied to jack pipe segments between two working shafts. However, the design of the jacking force is usually implemented using empirical methods. It should be emphasized that the jacking force will change for each site, depending on the magnitude of overcut, lubricants, work stoppages, geology and misalignment. A particle method is proposed to estimate the jacking force along the pipe. The microparameters are calibrated for sandy soils in Shenyang, so that the macroscale material behavior can be reproduced using the particle model. Hence, the normal force around the pipe circumference can be derived in the particle model, after which the interface friction coefficient is applied to evaluate the friction resistance mobilized at the soil-pipe interface. A modified Protodyakonov’s arch model can be used to assess the magnitude of earth pressure acting on the shield face. In the end, the combination of friction resistance and face pressure provides the jacking force. The efficacy of the proposed particle method is demonstrated by comparing calculated jacking forces with those measured in the field for three types of jacking machines in sandy soils under the Hun River, Shenyang.
URI: https://hdl.handle.net/10356/142557
ISSN: 2096-2754
DOI: 10.1016/j.undsp.2019.03.002
Rights: © 2019 Tongji University and Tongji University Press. Production and hosting by Elsevier B.V. on behalf of Owner. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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